Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Derek John Feussner, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1396004479

Dr. Derek John Feussner, MD practises Gastroenterology in Charleston, South Carolina. Graduated from Medical University of South Carolina College of Medicine in 2012, 14 years ago. Practices with Palmetto Digestive Disease PA, an 11-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
14
Trained at
Medical University of South Carolina College of Medicine
Licensed in
SC
In the registry since
2012
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

Charleston, SC

No coordinates on file. Search this address in Google Maps

Additional practice locations (1)

  • 169 Ashley Ave, Charleston, SC 29425-3504 — (843) 792-2575

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence LL38558 (SC)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1396004479
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 10, 2012
Last updated in NPPESMay 13, 2024
Certification dateMay 13, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice Palmetto Digestive Disease Pa — 11 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper gastrointestinal (GI) endoscopy for acid reflux 160 times · 86th percentile
Colonoscopy 120 times · 84th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients543
Services billed 1,185 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Palmetto Digestive Disease PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 11 clinicians in the practice; 8 are shown here.

Other providers in Charleston